1 INSERM, Paris, France; Institut de la Mémoire et de la Maladie d'Alzheimer (IM2A), Département de Neurologie, Hôpital de la Pitié-Salpêtrière, Sorbonne Universités, Université Pierre et Marie Curie-Paris6, Paris, France; Dipartimento di Scienze della Vita, Università degli Studi di Trieste, Italy; Centro Medico di Foniatria, Padua, Italy.
2 King's College London, Institute of Psychiatry, Psychology and Neuroscience (IoPPN), Academic Unit of Neuropsychiatry, St Thomas's Hospital, London, UK. Electronic address: [email protected].